Meaning
Contractual provisions protecting an investor from the effects of future share issuances at a lower valuation than their original entry price. These anti-dilution claims function by adjusting the conversion ratio of preferred stock into common stock. The mechanism ensures that the holder retains a relative economic position despite the downward shift in company value.
Protective Mechanism
Rights of this nature trigger during a down round when the company issues equity at a price per share below what previous participants paid. Most anti-dilution claims use either a weighted average formula or a full ratchet to determine the new conversion price. The full ratchet approach is more aggressive because it lowers the price to the new issue price regardless of how many shares were sold.
Investors use these clauses to insulate their capital against management decisions that lead to valuation drops.
Mathematical Adjustment
Calculation of the new share count relies on formulas that account for both the price and the volume of the new issuance. A broad-based weighted average for anti-dilution claims considers the total outstanding equity of the company. This formula minimizes the impact on founders compared to narrower versions.
The adjustment happens automatically upon the closing of the qualified financing.
Economic Boundary
Clauses of this type stop functioning once a company reaches a successful exit or a high-water mark in valuation. Investors often waive anti-dilution claims if doing so is necessary to attract new capital that saves the enterprise. The protection applies only to preferred holders and never extends to those holding common shares.